SL/R230: Valve Noise
Thread Starter
Member
Joined: Apr 2003
Posts: 113
Likes: 1
From: La Jolla, CA
13 E550 Cabriolet/19 SL550
Valve Noise
My 04 SL500 with 16374 miles suddenly developed a serious valve noise problem yesterday. The noise increases when I step on the gas whether I'm moving or not. Fortunately, I was very close to home and I was able to stop the car.
It's the kind of noise older V8s used to have when the lifters got screwed up.
The car was recently filled with 91 octane and I suppose there could be water in the gas or a malfunction which delivered the wrong octane.
Has anybody had this problem before? I'm going to have it towed to the dealer if I can't find the cause.
It's the kind of noise older V8s used to have when the lifters got screwed up.
The car was recently filled with 91 octane and I suppose there could be water in the gas or a malfunction which delivered the wrong octane.
Has anybody had this problem before? I'm going to have it towed to the dealer if I can't find the cause.
Super Member
Joined: Aug 2006
Posts: 545
Likes: 1
My 04 SL500 with 16374 miles suddenly developed a serious valve noise problem yesterday. The noise increases when I step on the gas whether I'm moving or not. Fortunately, I was very close to home and I was able to stop the car.
It's the kind of noise older V8s used to have when the lifters got screwed up.
The car was recently filled with 91 octane and I suppose there could be water in the gas or a malfunction which delivered the wrong octane.
Has anybody had this problem before? I'm going to have it towed to the dealer if I can't find the cause.
It's the kind of noise older V8s used to have when the lifters got screwed up.
The car was recently filled with 91 octane and I suppose there could be water in the gas or a malfunction which delivered the wrong octane.
Has anybody had this problem before? I'm going to have it towed to the dealer if I can't find the cause.
What kind of gas did you use? What Gas Station? Is it like a knocking noise?
Thread Starter
Member
Joined: Apr 2003
Posts: 113
Likes: 1
From: La Jolla, CA
13 E550 Cabriolet/19 SL550
It's an independent station called Encon so I don't know what wholesaler they get their gas from. It's listed as 91 octane. The noise is more like the valves "floating" than knocking.
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Joined: Aug 2006
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Oil Change? So it started after you filled up on gas? Have you used this gas station before?
Thread Starter
Member
Joined: Apr 2003
Posts: 113
Likes: 1
From: La Jolla, CA
13 E550 Cabriolet/19 SL550
Thanks for the response. No oil change. I filled it with gas on Monday and it started suddenly late Friday afternoon. I've had the top down most of the week when I drove it so I would have noticed the noise immediately.
Super Member
Joined: Aug 2006
Posts: 545
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Yeah thats odd....I wouldnt know what to tell you. Good luck with the problem and let us know what happened.
Thread Starter
Member
Joined: Apr 2003
Posts: 113
Likes: 1
From: La Jolla, CA
13 E550 Cabriolet/19 SL550
Thought I'd let everyone know what happened. I towed the SL to the dealer and they were perplexed. They called several hours later and said the catalytic converter had failed and was causing the valve noise. I've never heard of this before but I'm picking up the car tomorrow and will let you know.
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Joined: Aug 2006
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Thought I'd let everyone know what happened. I towed the SL to the dealer and they were perplexed. They called several hours later and said the catalytic converter had failed and was causing the valve noise. I've never heard of this before but I'm picking up the car tomorrow and will let you know.
Interesting. Well as long as the noise is gone and they took care of the issue....and hopefully nothing out of your pocket.
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